Black holes may hold the key to understanding the most fundamental truths of the universe, but how do you see something that’s, well, black? Astronomers think they have the answer. Thanks to a global array of radio telescopes that turn the Earth into a giant receiver, we may soon have the first picture of the event horizon of Sagittarius A*, the black hole at the center of the Milky Way galaxy. And, with the power of math, scientists are going even further, using equations to “look” inside black holes, peering at the central singularity where general relativity and quantum mechanics collide. Join Brian Greene and other leading physicists and astronomers on a journey to make darkness visible.

Find out more about the program and the participants: https://www.worldsciencefestiv....al.com/programs/dark

MODERATOR: Brian Greene
PARTICIPANTS: Shep Doeleman, Andrea Ghez, Vicky Kalogera, Cumrun Vafa

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Filmed live at the 2018 World Science Festival

Arithmetic Progression (AP) and Geometric Progression (GP) - Both super important concepts explained in this video. ⁣To summarise, An arithmetic Progression is a sequence with the difference between two consecutive terms constant. And a geometric Progression is a sequence with the ratio between two consecutive terms constant.


⁣In this video, we will learn:
0:00 Arithmetic Sequence
0:41 nth Term of Arithmetic Sequence
1:20 Average of n Terms in Arithmetic Sequence
1:34 Sum of Terms in Arithmetic Sequence
2:38 Geometric Sequence or Progression
4:11 nth Term of Geometric Sequence
4:16 Sum of Terms in Geometric Sequence

Electromagnetism is one of the fundamental forces and is the glue that holds all matter together. Find out how photons, the charged particles that allow us to see the world around us, are at the heart of electromagnetism.

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Easy to understand animation explaining all basic concepts.

Exponential Growth

Paul Andersen explains how populations eventually reach a carrying capacity in logistic growth. He begins with a brief discussion of population size ( N ), growth rate ( r ) and exponential growth. He then explains how density dependent limiting factors eventually decrease the growth rate until a population reaches a carrying capacity ( K ). A mathematical simulation of this process is included along with a brief discussion of r and K selected species.

Intro Music Atribution
Title: I4dsong_loop_main.wav
Artist: CosmicD
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Creative Commons Atribution License

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"File:Frog in Frogspawn.jpg." Wikipedia, the Free Encyclopedia. Accessed April 19, 2013. http://en.wikipedia.org/wiki/F....ile:Frog_in_frogspaw
"File:Stress-coloured Brookesia Desperata Female with Two Recently Laid Eggs.png." Wikipedia, the Free Encyclopedia. Accessed April 19, 2013. http://en.wikipedia.org/wiki/F....ile:Stress-coloured_
Nevit. English: White Rabbit, 2011. Own work. https://commons.wikimedia.org/....wiki/File:Rabbit_nev

A quick overview of some African descended authors from various Black communities throughout the country.

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Following the Spanish-American War, the United States foreign policy, under the influence of the Monroe Doctrine, intervened in several countries in Central America and the Caribbean. The United States Marine Corps was usually the military arm of these involvements as was the case in Cuba, Haiti and the Dominican Republic.

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» SOURCES
Bauduy, Jennifer, “The 1915 U.S. Invasion of Haiti: Examining a Treaty of Occupation” Social Education 79 (2015)

Castor, Suzy & Garafola, Lynn, “The American Occupation of Haiti (1915-34) and the Dominican Republic (1916-24)” The Massachusetts Review, Vol. 15, No. 1/2, Caliban (Winter - Spring, 1974)

Gilderhus, Mark T, The Second Century: U.S.-Latin American Relations Since 1889, (Wilmington, Delaware : Scholarly Resources Inc, 2000)

Johnson, Jeannie L. The Marines, Counterinsurgency, and Strategic Culture: Lessons Learned and Lost in America's Wars, (Washington D.C. : Georgetown University Press, 2018)

Langley, Lester D, The Banana Wars: United States Intervention in the Caribbean, 1898-1934, (Wilmington, Delaware : Scholarly Resources Inc, 2002)

Langley, Lester D, The United States and the Caribbean, 1900-1970, (Athens, Georgia : University of Georgia Press, 1980)

Perez, Louis A., Jr. Intervention, Revolution, and Politics in Cuba, 1913-1921, (Pittsburgh, Pennsylvania : University of Pittsburgh Press, 2009)

Posner, Walter H. “American Marines in Haiti, 1915-1922” The Americas, Vol. 20, No. 3 (Jan., 1964)

Schreadley, R. L. Intervention! : the Americans in Haiti, 1915-1934, (Charleston, South Carolina : Evening Post Books, 2017)

Yates, Lawrence A, “The US Military’s Experience in Stability Operations, 1789-2005”, Global War on Terrorism Occasional Paper 15, Title 1, Series 2, (2006)


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Take a look with us how permaculture farming is growing rapidly in India. Manisha Lath Gupta, who was an executive vice president in a private bank, decided to grow a healthy food for herself and her family in 2011. The bought a barren piece of land, devoid of any vegetation and without top soil. It took the couple 7 years, but at the end she and her husband created a food forest called Aanandaa or tranquility, using principles of permaculture. Aanandaa farm is located on the base of Morni hills, about an hour's drive from Chandigarh. What was a barren piece of land seven years ago is now a food forest with more than 4,500 trees.

#permaculture #foodforest #Aanandaa

⁣Agroforestry - How it Works